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No. 622,703. Patented Apr. Il, |899. T. J. MURDUCK.

BUBBIN AND THREAD MULDER.

(Application filed Apr. 14, 189B.)

(N0 Model.)

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UNTTnn STATES PATENT THOMAS J. MURDOOK, OF VOONSOOKET, RHODE ISLAND, ASSIGNOR TO HIMSELF AND JOHN RONEY, OF SAME PLACE.

`EOBBIN AND THREAD HOLDER.

SPECIFICATION forming part of Letters Patent No. 622,703, dated April 11, 1899. Application filed April 14:. 1898. Serial No. 677,563. (No model.)

To (all whom t may concern.-

Be it .known that I, THOMAS J. MURDOCK, a citizen of the United States, residing at l/Voonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bobbin and Thread Holders; and I do hereby declare the fcllowing to be a i' ull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in bobbin and thread holders; and it consists in head of the bobbin from the pressure exerted upon it by the spring-pressed holding-jaws is in many respects objectionable, especially so when a full bobbin is to be removed, as the force requisite to release thebobbin frequently results in the stripping of the latter, particularly when it is slack-Wound.

My invention may be so adapted as to be brought into action at the discretion of the operative, leaving him the option of employing it in releasing the bobbin or to remove such bobbin in the old way directly with his hand, or it may be so adapted as to be operated arbitrarily and automatically during the functions of the machine, as it is in its action independent of the holding-jaws.

My present invention may be said therefore to consist in providing a bobbin-holder of anydesired construction with a bobbin-releasing device which may be adapted to eX- ert at such times as the operative may elect or automatically by the mechanism of the machine, if desired, a pressure or force upon the bobbin suflicient to release the head of the latter from the grasp of the holder without the necessity of seizing the body of said bobbin with the hand.

In order to show a practical application of the principle of my invention, I have in the present instance shown and described .a class of bobbin-holders illustrated in Letters Patent of the United States -reissued to myself on the 24th day of November, 1896',No.11,57fl, inV which is employed a circular disk affixed concentrically to the bobbin-spindle.. Applied to the upper face of said disk is a series of spring-pressed segmental gripping-jaws, connected at their lo wer corners to the disk by lugs formed upon them, which extend loosely through slots in such disk and constitute pivots which permit of rocking movements of the jaws and allow their upper portions to approach or recede from the spindle or bobbin-headwhen a bobbin is upon said spindle and when such head is inclosed within the jaws. The holding-jaws are pressed toward each other and the spindle by the stress'of an annular coiled spring, which inclosesthem and which causes the jaws to grasp the head of the bobbin as well as to center such bobbin upon the spindle.

In carrying out my invention in one form in which its principle is susceptible of practical application I employa series of vertical spurs which extend upward loosely through slots in the disk and preferably concentrically of the spindle, such spurs being secured at their lower ends or formed upon an annulus disposed below the disk and loosely encircling the spindle, the length of the different spurs being such as when forced upward to impinge against the head of the bobbin and raise the latter from out of the grasp of the holding-jaws against the stress of the annular spring.

The drawings accompanying this specification represent in Figure l an elevation of a bobbin-holder and bobbin, and in Fig. 2 a vertical section of a bobbin-holder and full bobbin, both with my invention applied thereto, while Fig. 3 denotes a plan, and Fig. 4 an under side view, of said holder with myinvention also applied thereto Fig. 5 represents a view of the releaser,77 and Fig. 6 a view of one of the holdingjaws detached from the disk.

In the drawings, l represents the spindle of a bobbin-holder, such spindle to be mounted and operated in the manner generally employed in mules or ring-spinning frames.

2 denotesA a iiat circular disk secured concentrically and rigidly to the spindle, a bushing 3 of softer metal being preferably interposed between the spindle and disk.

The'adjustable holding jaws or plates are shown at 5 5 5, being in this instance three in number (though this number is not arbitrary) and disposed equidistant upon the top of the disk 2. Each plate 5 is in form a segment of a circle, and its lower edge is formed with a series of ears 6 6 6 6, each of which extends through a slot in the disk and is turned over beneath the disk, the corner-ears 6 6 serving to pivot the plate to the disk and permit of rocking motions of such plate with respect to the spindle or the head of a bobbin when one is inserted in place in the holder, while the centralea'rs 6 6 constitute stops to limit the inward movement of the plate when the bobbin is removed.

9 in the drawings denotes an annular coiled spring which encompasses thejaws 5 5 5 and serves to contract such jaws about the head of the bobbin when the latter is in the holder in readiness to be filled.

The above description of parts embodies the elementary features of a bobbin-holder of the class described in my reissued Letters Patent hereinbefore alluded to. As the nature and operation of such a bobbin-holder has been fully described in said reissue and as my present invention is confined to the of such length as when the releaser is pushed upward to rise above the disk ,to a height which will insure the expulsion from the jaws of the head of the bobbin under all circumstances. When freed from pressure, the releaser returns to its normal or idle position.

While I have described a bobbin-releasing device as composed of the ann ulus andlipped spurs, I do not confine myself to this exact construction, as I consider my invention to consist in the employment, in combination with a bobbin-holder, of any proper construction of a device operating independently of the holding mechanism to release the bobbin from the grasp of the latter, as such a result has never, so far as my knowledge extends, been accomplished.

What I'claim is- In combination with a bobbin-holder consisting of a slotted disk and spring-pressed arms or plates, of a bobbin-releasing device provided with spurs which extend through the slots of the said disk so as to bear against the head of the said bobbin, the ends of the said spurs being bent over above the said disk to prevent separation of these parts while allowing the independent relative motion of the releasing devices substantially as set I forth. 

